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iMX287 eth0: tx queue full!

Question asked by Liu Qi on Oct 9, 2014
Latest reply on Oct 20, 2014 by Yuri Muhin

Hello everyone,

    I'm using the fec0 of the iMX287 with 10M/Half duplex mode,but sometimes the fec0 will enter error state with the error message is "eth0: tx queue full!",and this state will keep on until I send "ifconfig eth0 down" and "ifconfig eth0 up".After these two commands,the fec0 will word correctly.I find the location of the error message "eth0: tx queue full!" is in the function of fec_enet_start_xmit in /drivers/net/fec.c, the resaon is the status bit BD_ENET_TX_READY is set. What's this bit mean? and in what condition this bit will be set? and when this bit is set, where and how to reset it?

    Best Regards.


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